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TI-2026-34743 Aliases CVE-2026-47153GHSA-qmrv-48wx-3c53

Level Control Step With On/Off divide-by-zero in EmberZNet v9.0.2

Priority LOW 38CWE-369Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-369.

Summary

In EmberZNet v9.0.2 and earlier, a malformed Level Control Step command can terminate the process through a divide-by-zero fault. This command must come from a device that has already joined the network. Only devices supporting the Level Control cluster may be impacted.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00436 38th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
silabs.comEmberZNetup to 9.0.2—No fix listedCNA
  • EmberZNet Vendorsilabs.com Affected up to 9.0.2 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:silabs:emberznet:*:*:*:*:*:*:*:*up to 9.0.2Vulnerablesilabs.com
  • cpe:2.3:a:silabs:emberznet:*:*:*:*:*:*:*:* Versions up to 9.0.2 Vulnerable ·silabs.com

Remediation

No fixed version listed by the sources yet.

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Advisory ·

    Silicon Labs EmberZNet — siliconlabs.lightning.force.com/sfc/servlet.shepherd/docume…

    11 records Highest priority Priority LOW 11 LOW

    Other records, highest priority first

    • TI-2026-34744 Simple Metering GetProfileResponse interval-bounds bug in EmberZNet v9.0.2Priority LOW 38
    • TI-2026-34742 Level Control Move divide-by-zero in EmberZNet v9.0.2Priority LOW 38
    • TI-2026-34739 Door Lock GetUserType invalid table index in EmberZNet v9.0.2Priority LOW 38
    Show all 11 records → Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-47153
  2. 2026-10-03 Alias added: GHSA-qmrv-48wx-3c53

References

Patch 1

Advisory 1

  • TI-2023-21716 Touchlink authentication bypass due to packets processed after timeout or out of range in Ember ZNet CVSS 3.1CRITICAL 10.0
  • TI-2022-08741 Malformed Zigbee packet causes Assert in EmberZNet 7.0.0 or earlier CVSS 3.1CRITICAL 9.8
  • TI-2023-28047 Silicon Labs EFR32xxx parts with classic key storage do not use hardware accelerated AES-CCM CVSS 3.1CRITICAL 9.8
  • TI-2022-08742 Malformed Zigbee packet causes Assert in EmberZNet 7.0.1 or earlier CVSS 3.1HIGH 7.5
  • TI-2023-28049 Potential DoS for EFR32xxx parts in high traffic environments due to null buffer dereference / crash CVSS 3.1HIGH 7.5
  • TI-2023-28048 Potential DoS due to BusFault and Assert in Ember ZNet legacy packet buffer CVSS 3.1HIGH 7.5
See all 21 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences